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Now showing items 11-20 of 36
Extraction of uranium from seawater : Design and testing of a symbiotic system
(Massachusetts Institute of Technology, 2017)
Seawater is estimated to contain 4.5 billion tonnes of uranium, approximately 1000 times that available in conventional terrestrial resources. Finding a sustainable way to harvest uranium from seawater will provide a source ...
Characterization of underwater target geometry from autonomous underwater vehicle sampling of bistatic acoustic scattered fields
(Massachusetts Institute of Technology, 2015)
One of the long term goals of Autonomous Underwater Vehicle (AUV) minehunting is to have multiple inexpensive AUVs in a harbor autonomously classify hazards. Existing acoustic methods for target classification using AUV-based ...
Computational strategies for understanding underwater optical image datasets
(Massachusetts Institute of Technology, 2013)
A fundamental problem in autonomous underwater robotics is the high latency between the capture of image data and the time at which operators are able to gain a visual understanding of the survey environment. Typical ...
Stratification on the Skagit Bay tidal flats
(Massachusetts Institute of Technology, 2012)
Estuarine density stratification may be controlled primarily by cross-shore processes (analogous to longitudinal control in narrow estuaries), or by both cross- and alongshore processes (typical of coastal plumes). Here ...
Adaptive sampling in autonomous marine sensor networks
(Massachusetts Institute of Technology, 2006)
In this thesis, an innovative architecture for real-time adaptive and cooperative control of autonomous sensor platforms in a marine sensor network is described in the context of the autonomous oceanographic network scenario. ...
Quantifying hurricane wind speed with undersea sound
(Massachusetts Institute of Technology, 2006)
Hurricanes, powerful storms with wind speeds that can exceed 80 m/s, are one of the most destructive natural disasters known to man. While current satellite technology has made it possible to effectively detect and track ...
Stochastic mapping for chemical plume source localization with application to autonomous hydrothermal vent discovery
(Massachusetts Institute of Technology, 2006)
This thesis presents a stochastic mapping framework for autonomous robotic chemical plume source localization in environments with multiple sources. Potential applications for robotic chemical plume source localization ...
Forward sound propagation around seamounts : application of acoustic models to the Kermit-Roosevelt and Elivs seamounts
(Massachusetts Institute of Technology, 2009)
The Basin Acoustic Seamount Scattering Experiment (BASSEX) of 2004 was conducted to measure forward-scattering around the Kermit-Roosevelt Seamount Complex in the Northeast Pacific. The BASSEX experiment was focused on the ...
Advances in integrating autonomy with acoustic communications for intelligent networks of marine robots
(Massachusetts Institute of Technology, 2013)
Autonomous marine vehicles are increasingly used in clusters for an array of oceanographic tasks. The effectiveness of this collaboration is often limited by communications: throughput, latency, and ease of reconfiguration. ...
Performance analysis for lateral-line-inspired sensor arrays
(Massachusetts Institute of Technology, 2011)
The lateral line is a critical component of the fish sensory system, found to affect numerous aspects of behavior including maneuvering in complex fluid environments, schooling, prey tracking, and environment mapping. This ...